[FFmpeg-trac] #6156(undetermined:reopened): Issue with FFMPEG ALSA CPU usage

FFmpeg trac at avcodec.org
Wed Apr 18 20:02:21 EEST 2018


#6156: Issue with FFMPEG ALSA CPU usage
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             Reporter:  mushm0m      |                    Owner:
                 Type:  defect       |                   Status:  reopened
             Priority:  normal       |                Component:
              Version:  git-master   |  undetermined
             Keywords:  alsa         |               Resolution:
             Blocking:               |               Blocked By:
Analyzed by developer:  0            |  Reproduced by developer:  0
-------------------------------------+-------------------------------------

Comment (by cehoyos):

 Replying to [comment:5 kainz]:
 > So on a pi0w using a similar setup, but with a PCM line mic that i've
 got rigged to show up as a alsa PCM capture device @48000/s16le, I can
 absolutely reproduce the CPU usage issue when running `ffmpeg -f alsa -i
 default -acodec pcm_s16le out.wav`

 Please confirm that the issue is not reproducible with `arecord`.

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Ticket URL: <https://trac.ffmpeg.org/ticket/6156#comment:7>
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